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| author | peter <peter@FreeBSD.org> | 2008-01-14 22:53:01 +0000 |
|---|---|---|
| committer | peter <peter@FreeBSD.org> | 2008-01-14 22:53:01 +0000 |
| commit | ed5c5e33bff2d3d10c74801eb63aa2dd9574a114 (patch) | |
| tree | de937a82032f90e0f8f10fd39b11cbe9d309e22d /sys/i386/include/pmap.h | |
| parent | 8ead68ecb0cef2086a17ea44de4d68c42434fd7a (diff) | |
| download | FreeBSD-src-ed5c5e33bff2d3d10c74801eb63aa2dd9574a114.zip FreeBSD-src-ed5c5e33bff2d3d10c74801eb63aa2dd9574a114.tar.gz | |
Update the KVA_PAGES comments for the effect that PAE has on it. It
becomes a unit size of 2MB instead of 4MB and must be a multiple of 8 to
get a valid KERNBASE.
Diffstat (limited to 'sys/i386/include/pmap.h')
| -rw-r--r-- | sys/i386/include/pmap.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/i386/include/pmap.h b/sys/i386/include/pmap.h index 6274ca7..3edec14 100644 --- a/sys/i386/include/pmap.h +++ b/sys/i386/include/pmap.h @@ -95,6 +95,8 @@ * Size of Kernel address space. This is the number of page table pages * (4MB each) to use for the kernel. 256 pages == 1 Gigabyte. * This **MUST** be a multiple of 4 (eg: 252, 256, 260, etc). + * For PAE, the page table page unit size is 2MB. This means that 512 pages + * is 1 Gigabyte. Double everything. It must be a multiple of 8 for PAE. */ #ifndef KVA_PAGES #ifdef PAE |
